Home / 131,399.21-181,345.10-80,446.23

Finding the Fourth Proportional to 131,399.21, 181,345.10 and 80,446.23

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Solution

The fourth proportional to 131,399.21, 181,345.10 and 80,446.23 is: 111,024.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,399.21 : 181,345.10 = 80,446.23 : x
  2. Step 2: Convert to fraction form
    131,399.21/181,345.10 = 80,446.23/x
  3. Step 3: Cross multiply
    131,399.21x = 181,345.10 × 80,446.23
  4. Step 4: Simplify right side
    131,399.21x = 14,588,529,221.74
  5. Step 5: Solve for x
    x = 14,588,529,221.74/131,399.21
  6. Step 6: Final answer
    x = 111,024.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.